Sulfur-spraying apparatus.



NO- 892,307. PATENTED JUNE 30, 1908. D. E. ROSASCO.

.SULFUR SPRAYING APPARATUS.

APPLICATION nun FEB; 24, 19da.-

INVENTOR egg w 0 C? W WITWE'SSE-S.

7 MT I. mg;

UNITED STATES EIETENT OFFICE.

DAVID E. ROSASGO, OF HEALDSBURG, CALIFORNIA.

SULFUR-SPRAYING APPARATUS.

Specification of Letters Patent.

Patented June 30, 1908.

Application filed February 24, 1908. Serial Il'o. 417,306.

signed for use in connection with the work of spraying sulfur onto vines within a vineyard, the object being to provide a simple, efficient and inexpensive hand actuated apparatus capable of being carried by' the operator and actuated during his travel between the vines to forcibly eject sulfur therefrom onto the grape vines, either in a solid stream, or in a spray like stream.

To comprehend the invention reference should be had to the accompanying sheet of drawi'ngs, wherein- Figure 1 is an end elevation of the appa ratus, partly broken away, illustrating the position of the means for actuating the air bellows, and operating the sulfur distributing rod or blade located within the sulfur holding compartment. Fig. 2 is a vertical sectional view of the holder or outer casing, disclosing the air bellows, the sulfur holding compartment, the distributing rod or blade therein, and the outlet passage for the sulfur. Fig. 3 is a plan view of the apparatus with. its cover removed, the perforated distributing plate for the sulfur being partly broken away. F 4 is a detail sectional view of the spray nozzle for attachment to the discharge pipe.

Any suitable form of an outer casing may be employed, but, in the present case the same is illustrated as being formed of an upper section 1 and a lower section 2, which lower section is removable from the upper section and fits thereto by a slip oint. Between these sections is held the air bellows, the upper edge of the flexible connection 3 of which is fitted over the edge of the lower section 2, so that when the said section is fitted onto the up )er section 1, the air bellows will be securer in proper position.

To a stud 3 depending from the istonhead 4 of the air bellows, is adjustab y con nected a crank arm 4, which arm is attached at its opposite end to a rock shaft 5. This shaft extends outside of the lower section 2 of the casing, Figs. 1 and 2 of the drawings, and to the same is secured the hand lever 5.

This hand lever 5 is operated by the person employed to spray the sulfur, and on each stroke thereof the shaft 5 is actuated to raise and lower the piston-head 4 of the air bellows through the connection of the crank arm 4.

On the upper stroke of the piston-head 4, air is drawn into the chamber 6 of the lower section of the casing, through the inlet port 6, which port is closed normally by an in-- wardly movable valve 7 while on the downward stroke of the said piston-head 4, the valve 7 seats to close the inlet port 6 against the escape of air therethrough; On such down stroke of the piston-head, the air previously admitted into the chamber 6 escapes through the outlet port 8, which is held closed of the suction stroke of the pistonhead by means of the outwardly swinging valve 8. Air is thus taken into the chamber 6 on one stroke of the piston-head 4, and expelled therefrom on the opposite stroke thereof.

The interior of the u per section 1 of the outer casing is divided by a V-shaped or double inclined diaphragm 9 into an air re ceiving chamber 9, and a sulfur holding chamber 10, into which latter chamber is fitted a perforated bottom plate 10. This perforated bottom plate is secured to the upper face of the diaphragm 9, so as to form a longitudinally disposed receiving chamber 1 1, into which powdered sulfur is delivered from the holding chamber 10. From one end of the receiving Ollitlllbflldl extends the outlet pipe 12, to which is connected the flexible section of the discharge tube 12. The opposite, end of the receiving chamber 11 communicates with the air conduit 13, which receives air from the chamber 6 of the lower section 2 of the casing through the valve controlled outlet port 8.

On the downstroke of the air bellows, air is drawn into the chamber 9 of the upper section 1 of the casing through the inlet port 13, which is held closed against the escape of air on the upstroke of the said bellows by means of the inwardly swinging valve 13. On the said u stroke of the said bellows, the air ad.

mittec into the chamber 9 is forced therefrom into the air conduit 18 through the outlet port 14, which is held closed during the intake of air into the chamber 9 by means of the outwardly swinging valve 14. On each stroke of the bellows, during the operation of the hand lever 5, air is admitted into the air spray nozzle 15'is secured to the free end ofthe discharge tube 12.

Inasmuch as the sulfur placed within the chamber 10 contains lumps, it is desirable that the same be thoroughly pulverized or broken up so as to enter freely into the receiving chamber 11 through the perforated bottom plate'lO. For this purpose there is arranged within the chamber 10 a rock-shaft 15, carrying a depending blade or extension 16, which is arranged to work overthe surface of the perforated plate 10. The wiping action of the blade or extension 16, breaks up any lumps which may exist in the sulfur within the chamber 10, and forces the sulfur in a powdered condition through the perforations of the plate 10 into the receiving chamber 11.

The rock-shaft 15 is actuated from the hand lever 5 by means of the link 16, which at its upper end is connected to an arm 17 se- 'cured to the projecting end of the shaft 15.

By varying the position of the connection between the link 16 and the lever 5 and the arm 17, which-is accomplished by shifting the location of the securing pins 17 with respect to either of the series of openings in the lever 5 and the link 16 to receive the same for securing the link 16 to the lever and arm, the stroke of the hand lever 5 may be lengthened and shortened to vary the stroke of the air bellows, so as to regulate the air current to force the sulfur from within the chamber 10.

By means of the shoulder straps 18, the apparatus'may be attached to the back of the operator. With the device thus positioned,

the operator while walking between the vines to be sprayed, with one hand actuates the lever 5, while with the other hand is held the discharge tube 12 for directing the stream or spray of sulfur onto the vines. A single op- 'erator with the described ap aratus is enabled to successfully treat t e vines of a number of acres per day with sulfur. L Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is 1. An apparatus of the described character, comprising an outer casing having an upper air receiving chamber, a lower air receivin chamber, a sulfur holding chamber and a su fur receiving chamber, an air bellows separating the air receiving chambers, an air conduit communicating with the sulfur receiving chamber, a distributing pipe leading from said chamber, said air receiving chambers having valved air inlets and valved controlled outlets connecting the air chambers with the air conduit, and a hand lever for actuating the air bellows.

2. An apparatus of the character described, comprising a casin having two air receiving chambers, and a sulfur receiving chamber, an air conduit communicating with the sulfur receiving chamber, a discharge pipe leading from the sulfur receiving chamber, said air receiving chambers havin valved air inlets and valved controlled out et ports connecting the air chambers with the air conduit, 'a single means for alternately drawing air into said chambers through the valved inlets and a hand lever operatively connected with said means.

3. An apparatus of the character described, comprising an outer casing having itsinterior divided to provide an upper air receiving chamber, a lower air receiving chamber and a receiving chamber for powdered sulfur, an air conduit communicating with the sulfur receiving chamber, a discharge pipe leading from the sulfur receiving chamber, said air receiving chambers having valved air inlets and valved controlled outlets connecting the air chambers with the air conduit, means common to both air receiving chambers for alternately drawing air into said chambers throu h the valved inlets and a hand operated Iever operatively connected to said means.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DAVID E. ROSASCO.

Witnesses:

E. M. NORTON, J. F. ROSENBERG. 

